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    <title>css综合</title>
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    <p class="poem-title"  align="center" ><b>静夜思</b></p>
<p class="poem-line1"  align="center">窗前明月光</p>
<p class="poem-line2"  align="center">疑是地上霜</p>
<p class="poem-line3"  align="center">巨头望明月</p>
<p class="poem-line4"  align="center">低头思故乡</p>
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